Originally Posted by methimpikehoses
I just installed it for the first time on x64... I turned up all the eye candy quite a bit and it's stuttery.
I think I'll have to turn down some of the options in the global profile to smooth it out (enable the optimizations and such). Doesn't appear to be multi-threading much, and I would have thought the 4GB would help too.
Turn off light bloom, ground scenery shadows, set water to low 2.x, and autogen to dense. That should allow you run everything else maxed out on that system.
SP1 comming out later this month is supposed to improve the multicore support, and give a 20% performance boost.